Finding the Fourth Proportional to 239.09, 358.77 and 84.99
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Solution
The fourth proportional to 239.09, 358.77 and 84.99 is: 127.54
Step by Step Solution
- Step 1: Write the proportion equation
239.09 : 358.77 = 84.99 : x - Step 2: Convert to fraction form
239.09/358.77 = 84.99/x - Step 3: Cross multiply
239.09x = 358.77 × 84.99 - Step 4: Simplify right side
239.09x = 30,491.86 - Step 5: Solve for x
x = 30,491.86/239.09 - Step 6: Final answer
x = 127.54
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.